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Re: History rewrite for corebase and gui


From: Ivan Vučica
Subject: Re: History rewrite for corebase and gui
Date: Tue, 20 Jun 2017 21:17:40 +0100

This is now complete.

On Tue, Jun 20, 2017 at 9:10 PM, Ivan Vučica <ivan@vucica.net> wrote:
> Hi,
>
> https://github.com/gnustep/gitsvn-scripts/issues/2
>
> """
> I've mistakenly created merges which work okay with local clients, but
> confuse Github and other web UIs which don't recognize replace refs.
>
> - gnustep/libs-gui@250d3ee0af7f2fc304ab735ada8b3238154d060f
> - gnustep/libs-gui@44dd9abab7db1aa3e0d41f2b7da55c788f795c8f
> - gnustep/libs-corebase@4d4fa0a5a38ff6fa4b529216d3cc3859765d9cbf
>
> This will require rewriting history, but it's better in the long run.
> """
>
> I've just pushed rewritten libs-corebase (where I cherrypicked the
> contributions instead).
>
> I'm about to do the same for libs-gui.
>
> You *will* need to cherrypick (or rebase, though I have less faith
> that this will work) if you have changes locally. I suggest
> cherrypick. Exact procedure for how to do this is unfortunately out of
> scope for this mail, but basically this should work:
>
> git log # and note commit hashes for each of your changes
> git checkout origin/master
> git cherry-pick CHANGE1
> git cherry-pick CHANGE2
> # etc
> git log # and note commit hash of the new head
> echo "your-new-commit-hash-here" > .git/refs/heads/master # I don't
> know how else to change what the 'master' local branch points to, and
> this works for me.
>
> Thankfully you should be prevented from pushing if you don't do this 
> correctly.
>
> You can also store your unsubmitted patches for safekeeping by using
> git format-patch correctly. Since I haven't used this much, how to do
> this correctly is also out of scope and can be found online.
>
> Sorry about this, but I messed up pretty badly doing these merges, so
> we ended up with doubled history in any client that doesn't recognize
> / doesn't have replace refs downloaded.



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